diff options
| author | Eran Ben Elisha <eranbe@mellanox.com> | 2015-12-29 14:58:30 +0200 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2016-01-05 14:11:50 -0500 |
| commit | b0844444590e18704644f707ea88bff1b976b0e7 (patch) | |
| tree | eb586b351a7e95ab4672fb14c2d68775c213287d /drivers/net/ethernet/mellanox/mlx5/core/main.c | |
| parent | 34802a42b3528b0e18ea4517c8b23e1214a09332 (diff) | |
net/mlx5_core: Introduce access function to read internal timer
A preparation step which adds support for reading the hardware
internal timer and the hardware timestamping from the CQE.
In addition, advertize device_frequency_khz HCA capability.
Signed-off-by: Eran Ben Elisha <eranbe@mellanox.com>
Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers/net/ethernet/mellanox/mlx5/core/main.c')
| -rw-r--r-- | drivers/net/ethernet/mellanox/mlx5/core/main.c | 13 |
1 files changed, 13 insertions, 0 deletions
diff --git a/drivers/net/ethernet/mellanox/mlx5/core/main.c b/drivers/net/ethernet/mellanox/mlx5/core/main.c index 789882b7b711..67676cf0d507 100644 --- a/drivers/net/ethernet/mellanox/mlx5/core/main.c +++ b/drivers/net/ethernet/mellanox/mlx5/core/main.c @@ -504,6 +504,19 @@ int mlx5_core_disable_hca(struct mlx5_core_dev *dev, u16 func_id) return mlx5_cmd_status_to_err_v2(out); } +cycle_t mlx5_read_internal_timer(struct mlx5_core_dev *dev) +{ + u32 timer_h, timer_h1, timer_l; + + timer_h = ioread32be(&dev->iseg->internal_timer_h); + timer_l = ioread32be(&dev->iseg->internal_timer_l); + timer_h1 = ioread32be(&dev->iseg->internal_timer_h); + if (timer_h != timer_h1) /* wrap around */ + timer_l = ioread32be(&dev->iseg->internal_timer_l); + + return (cycle_t)timer_l | (cycle_t)timer_h1 << 32; +} + static int mlx5_irq_set_affinity_hint(struct mlx5_core_dev *mdev, int i) { struct mlx5_priv *priv = &mdev->priv; |